linux-kernel - Re: PANIC: "Oops: 0000 [#1] PREEMPT SMP PTI" starting from 5.17 on dual socket Intel Xeon Gold servers

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Date:   Mon, 25 Apr 2022 23:34:58 +0200
From:   Jirka Hladky <jhladky@...hat.com>
To:     Minchan Kim <minchan@...nel.org>
Cc:     Thorsten Leemhuis <regressions@...mhuis.info>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        regressions@...ts.linux.dev,
        Justin Forbes <jforbes@...oraproject.org>,
        Tejun Heo <tj@...nel.org>
Subject: Re: PANIC: "Oops: 0000 [#1] PREEMPT SMP PTI" starting from 5.17 on
 dual socket Intel Xeon Gold servers

Hi Minchan,

I have tested the proposed patch and it fixes the issue!

Thanks a lot for your help!
Jirka


On Fri, Apr 22, 2022 at 10:09 PM Minchan Kim <minchan@...nel.org> wrote:
>
> On Fri, Apr 22, 2022 at 08:44:17PM +0200, Thorsten Leemhuis wrote:
> > On 22.04.22 20:27, Minchan Kim wrote:
> > > On Thu, Apr 21, 2022 at 06:47:41AM -1000, Tejun Heo wrote:
> > > [...]
> >
> > Many thx for looking into this.
> >
> > > Jirka, Could you test the patch? Once it's confirmed, I need to resend
> > > it with Ccing stable.
> >
> > When you do so, could you please include a proper "Link:" tag pointing
> > to all reports of the regression, as explained in the Linux kernels
> > documentation (see 'Documentation/process/submitting-patches.rst' and
> > 'Documentation/process/5.Posting.rst'). E.g. in this case:
> >
> > Link: https://bugzilla.kernel.org/show_bug.cgi?id=215696
> > Link:
> > https://lore.kernel.org/lkml/CAE4VaGDZr_4wzRn2___eDYRtmdPaGGJdzu_LCSkJYuY9BEO3cw@mail.gmail.com/
>
> Sure. Will do that.
>
> >
> > This concept is not new (Linus and quite a few other developers use them
> > like this for a long time), I just recently improved those documents to
> > clarify things, as my regression tracking efforts rely on this (and
> > there might be other people and software out there that does) -- that's
> > why it's making my work a lot harder if such tags are missing. :-/
> >
> > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> >
> > P.S.: As the Linux kernel's regression tracker I'm getting a lot of
> > reports on my table. I can only look briefly into most of them and lack
> > knowledge about most of the areas they concern. I thus unfortunately
> > will sometimes get things wrong or miss something important. I hope
> > that's not the case here; if you think it is, don't hesitate to tell me
> > in a public reply, it's in everyone's interest to set the public record
> > straight.
> >
> > > [...]
>


-- 
-Jirka